Codes 528 & 542....my fuse #5 keeps blowing

[NiNeTy Fo SHO]

For my 94 MTX:

I had autozone run my codes (I was in the area) b/c the ford dealership informed me that since fuse #5 keeps blowing, it should be throwing a code. (I was thinking the computer would only throw codes for sensors, systems, etc.)

So anyway, I am getting 528 and 542. From the shophoenixproject website:

528 (M) System shows voltage at pin 10 (is A/C on ?) or pin 30 (PNP, CPP switch) - PNP

542 (O,M) Fuel pump open, bad ground or always on - - Power / Fuel Pump Circuits

I also had AZ print out what their system has for the description of the codes. I can post those if needed (kinda long).

I believe 528 points to my clutch switch. (my clutch switch has been broke...aka you can start the car without pressing the clutch pedal down)

Would either of these codes point to why fuse #5 keeps blowing? It mentions that the ECM may be bad from one of the codes.

I dont like mechanical problems, but I HATE electrical problems. Please help!

(Fuse #5 controls the turn signals, eatc, reverse lights, and rear defrost....all of which stop working when the fuse goes south.)

 

[SuperHO]

Might could be your multi-function switch has crapped out on you, but then, I've not quite made it to the level of SHO guru....I'm still a plebe.

 

[projectSHO89]

Those codes have nothing to do with the blown fuse or vice versa. The guy at the dealership was a nitwit. I would not worry about them right now but would concentrate on resolving the short ciruit in the lighting circuit.

The circuit fed by F5 goes to many additional places besides those you mentione. It won't be easy to find without a lot of work.

Steve

 

[NiNeTy Fo SHO]

Those codes have nothing to do with the blown fuse or vice versa. The guy at the dealership was a nitwit. I would not worry about them right now but would concentrate on resolving the short ciruit in the lighting circuit.

The circuit fed by F5 goes to many additional places besides those you mentione. It won't be easy to find without a lot of work.

Steve

I didnt think that they did either, but I figured I would try. We all know about most dealership people...just thought I'd give the whole scenario.

I have done a few things that I would thought might have blown the fuse (like the fish tank mod...I thought maybe something came undone) but nothing so far.

What do you mean the circuit fed by F5 goes to many additional places? How do I find out where these places would be?

Does anyone want to buy an electrical problem?? :cry:

I know it wont be easy...thats what I am afraid of.